Second-harmonic green generation from two-dimensional χ(2) nonlinear photonic crystal with orthorhombic lattice structure

被引：38

作者：

Peng, LH ^{[1
]}

Hsu, CC

Shih, YC

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan

[2] Natl Taiwan Univ, Inst Electroopt Engn, Taipei 10764, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 17期

关键词：

D O I：

10.1063/1.1622786

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the synthesis of nonlinear photonic crystals (NPCs) with a periodical distribution of inverted chi((2)) nonlinearity having an orthorhombic lattice structure on Z-cut congruent-grown lithium niobate (LiNbO3) substrate. The quasiphase-matching (QPM) mechanism of nonlinear wave interaction is examined by monitoring the far-field emission pattern of second-harmonic generation (SHG) as the NPC is pumped by a Nd:yttritium-aluminum-garnet laser beam. We observe (i) a series distribution of green SHG in a direction transverse to the fundamental beam, and (ii) an increase of phase-matching temperature in the SHG peak signal with the azimuth rotation angle in the x-y plane. These observations are ascribed to the high-order reciprocal lattice vectors assisted QPM-SHG process in a NPC that has a distribution of chi((2)) nonlinearity with an orthorhombic crystal symmetry. (C) 2003 American Institute of Physics.

引用

页码：3447 / 3449

页数：3

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